I build very large maps that tend to repeat large sections of the map in different branches. Freemind instituted this sort of cloning but the latest update is a real mess. It would be nice if I could simply do a visual link to a branch, show it visually, without actually creating a second instance of the stored data.
This is a very important function (freeplane implements it very well... freemind is still working on it).
This allows me to use mind maps loaded with requirements and map the requirements to the multiple features that they support ... then I can edit the requirement anywhere it appears (cloned) and am really updating the master nodes... I use this in freeplane to coordinate/plan development efforts... but am looking for a cloud solution that can be used for collaboration.. so this feature determines whether I can use a solution or not.